Whenever it's ready, we don't set release dates. You can just apply the changes in the revision I linked to though and you won't get the errors anymore...
Matt, I'm hesitant to do that but if you insist it'll fix my problem, can you delve a bit further into what steps to take?
I assume I click on the revisions, view the diff reports and make the changes??
I know Matt's busy - maybe someone else can confirm/disconfirm?
Yes, in fact the one that will stop the error is this one:
http://dev.mybb.com/projects/mybb/reposi.../index.php
There's other changes there to fix the code that make the error possible in the first place, but just that change will catch the problem before it has a chance to cause an SQL error.